#1F3D7D#1F3D7D

#1F3D7D is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.115 H 263.1°. Best body text is #FFFFFF at 10.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D7D
RGB	rgb(31, 61, 125)
HSL	hsl(221, 60%, 31%)
HSV	hsv(221, 75%, 49%)
CMYK	cmyk(75.2%, 51.2%, 0%, 51%)
CIE-LAB	lab(27.04, 12.83, -39.61)
CIE-LCH	lch(27.04, 41.64, 287.94°)
OKLab	oklab(37.55% -0.0137 -0.1138)
OKLCH	oklch(37.55% 0.115 263.1)
XYZ	xyz(5.9342, 5.1088, 20.0714)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D7D #7D5F1F

analogous

#1F6C7D #1F3D7D #301F7D

triadic

#1F3D7D #7D1F3D #3D7D1F

tetradic

#1F3D7D #7D1F6C #7D5F1F #1F7D30

square

#1F3D7D #7D1F6C #7D5F1F #1F7D30

split-complementary

#1F3D7D #7D301F #6C7D1F

monochromatic

#070D1B #13254C #1F3D7D #2B55AE #4572D1

Accessibility & contrast

On white

10.39

#1F3D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1F3D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D7D

10.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D7D	#FFFFFF	#000000	##FFFFFF
##1F3D7D	1.00	10.39	2.02	10.39
#FFFFFF	10.39	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18447F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f3d7d;
/* rgb */ color: rgb(31, 61, 125);
/* oklch */ color: oklch(37.5% 0.115 263.1);

Tailwind

colors: {
  custom: {
    50: '#6872a3',
    500: '#1f3d7d',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d7d;
$custom-light: #6872a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d7d",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 220.851,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37545,
    "c": 0.11459,
    "h": 263.1
  },
  "luminance": 0.05109
}

Semantic roles & 50–950 ramp

primary

#1F3D7D

secondary

#B08F48

accent

#B144E3

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1F3D7D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →